Process for manufacturing material for casting and painting.



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UNITED STATES PATENT OFFICE.

SIGISMUND MEDVECZKY, OF BUDAPEST, AUSTRIA-HUNGARY.

PROCESS FOR MANUFACTURING MATERIAL FOR CASTING AND PAINTING.

No Drawing.

To all whom it my concern:

Be it known that I, SIGISMUND MED- VECZKY, engineer, a subject of the King of Hungary, and residing at Bakacsutca,IX., 5 in the city of Budapest, Empire of Austria- Hungary, have invented certain new and useful Improvements in the Process for Manufacturing Material for Casting and Painting, of which the following is a full,

10 clear, and exact specification.

The subject of the present invention is a process for producing a material which to some extent possesses both the properties of glass and of celloidin or celluloid and in consequence is well adapted for use for "many technical and industrial purposes. This material is produced by b oflingju cggqgntrateg n tion of sodium sili %m@"sil1c1c ac1 "w 101 1 solu in water, fresh elloidin which Mont ififo smal'l'jmated, until the solution has become saturated with the celloidin. The liquid is preferably kept boiling for a short time thereafter and to the solution there is added a metal oxid having a strong afiinity to silicic acid and slightly soluble in water, preferably Pb I y" t e hardness 0 e coa mg or desired. It is also preferable to boil with the solution uartz owder so thme free alkalis thermioally bound as far as possible. If desired, any resinous S5 material such as um co al or kauri m may be boiled therewl'fh'fi 'peclally when a high 6m desired. This solution when cold 1s very suitable impregnating wood, metal and earthenware 40 articles. The dried coating forms a material which may be designated celloidin glass since it has both the properties of glass and of celloidin. If the painted or impregnated articles after drying are 4 coated with or dipped in an alcoholic solution of cam hor. p y o a s reng o I c n in this solvent becomes converted into that finally the coating or impregnation forms a union of glass and celluloid and retains to a certain extent the properties of both. It may be remarked that the viscous liquid so formed can be diluted to some extent with water without the celloidin separating out. If desired, this liquid, by the addition of min- Specification of Letters Patent.

Patented Dec. 26, 1911.

Application filed November 15, 1910. Serial No. 592,536.

pre era ly followed by a further treatment with a suitable acid such as siliconhvdrofiuo ic id both of these sohmfi'ai'ter being very much diluted. The preferred strength of this solution is from 1 to 3%. This treatment substantially increases the hardness of the coating and at the same time causes the alkalis to separate out in such manner that they can be dusted away without leaving a mark.

Such coatings or impregnating materials may be utilized for many purposes while articles can be cast from the solution when sufiiciently concentrated, which articles, in consequence of the actions of the celloidin and of the camphor, have in them the properties of glass and of celluloid. I The preferred proportions are the followmg: 100 parts of a silic.te which is soluble in water 20 parts of uartz owder a parts of a metal oxid. To the SOlllllOIl of these matmdded as much fresh celloidin as will dissolve in the solution and mm .;.o to 1.5 parts of a resinous material.

Having now particu ar y escri e an ascertained the nature of my said invention and in what manner the same'is to be performed, I declare that what I claim is 1. A process for manufacturing a material for casting and painting, said process consisting in boiling fresh celloidin in a concentrated solution of any silicate which is soluble in water, such as sodium or potassium silicate, until the celloidin is dissolved to the greatest possible extent and 1 the liquid becomes quite viscous.

2. A process for manufacturing a material for casting and painting, said process consisting in boiling fresh celloidin in a concentrated solution of a silicate soluble in water, and continuing the boiling until the celloidin is dissolved to the greatest possible extent and the liquid becomes quite viscous.

3. A process for manufacturing a material for casting and painting, said process consisting in boiling fresh celloidin in a concentrated solution of a silicate soluble in water, adding, to the boiling solution, a metal oxid having a strong afiinity to silicic acid and which is slightly soluble in water,

and continuing the boiling until the celloidin is dissolved to the greatest possible extent and the liquid becomes quite viscous.

4. A process for manufacturing a material for casting and painting, said process consisting in boiling fresh celloidin in a concentrated solution of a silicate soluble in water, adding, to the boiling solution, a metal oxid such as sodium or potassium silicate having a strong aflinity to silicic acid and which is slightly soluble in water, and continuing the boiling until the celloidin is dissolved to the greatest possible extent and the liquid becomes quite viscous.

5. A process for manufacturing a material for castin and painting, said process consisting in oiling fresh celloidin in a concentrated solution of a silicate soluble in water, adding, to the boiling solution, a quartz powder, a resinous material and a. metal oxid having a strong aifinity to silicic acid, and which is slightly soluble in water, and continuing the boiling until the celloidin is dissolved to the greatest possible extent and the liquid becomes quite viscous.

In/te timony whereof I have aifixed my signat re in the presence of two witnesses.

SIGISMUND MEDVECZKY. Witnesses:

MARTIN HoomcER, HUGH KEMENY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

i Washington, I). C. 

